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v3.19.2

Related Party Transactions (Tables) | 6 Months Ended
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Jun. 30, 2019
Balance Sheet [Member] |
Related Party Transaction [Line Items] |
Schedule of Related Party Transactions [Table Text Block] |
(In millions) | December 31, 2018 | June 30, 2018
Accounts and notes receivable - net | $ | 1 |  | $ | 1 |
Accounts payable | $ | 110 |  | $ | 138 |

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
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Balance Type: | na
Period Type: | duration

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- Definition Tabular disclosure of related party transactions. Examples of related party transactions include, but are not limited to, transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners and (d) affiliates. + References No definition available. + Details
Name: | us-gaap_ScheduleOfRelatedPartyTransactionsTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | dd_TypeofDisclosureAxis=dd_BalanceSheetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |